​ The border in Ms. Jarvis' room.

​

Equation of function: y=cos(x)

Domain: (-infinity, +infinity)

Range: [-1,1]

Discontinuities: None

Symmetry: About the y-axis

Even, odd, or neither: Even because cos(-x)=cos(x) End behavior using limits:

Limf(x)=1 x-->0-

Limf(x)=1 x-->0+

Limf(x)=1 x-->0